cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A328161 Numbers n that are prime or whose proper divisors (greater than 1 and less than n) have no consecutive divisibilities.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 17
16 19
17 21
18 22
19 23
20 24
21 25
22 26
23 29
24 30
25 31
26 33
27 34
28 35
29 36
30 37
31 38
32 39
33 41
34 43
35 45
36 46
37 47
38 48
39 49
40 51
41 53
42 55
43 57
44 58
45 59
46 60
47 61
48 62
49 63
50 65
51 67
52 69
53 70
54 71
55 72
56 73
57 74
58 77
59 79
60 82
61 83
62 84
63 85
64 86
65 87
66 89
67 90
68 91

List of values

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 17, 19, 21, 22, 23, 24, 25, 26, 29, 30, 31, 33, 34, 35, 36, 37, 38, 39, 41, 43, 45, 46, 47, 48, 49, 51, 53, 55, 57, 58, 59, 60, 61, 62, 63, 65, 67, 69, 70, 71, 72, 73, 74, 77, 79, 82, 83, 84, 85, 86, 87, 89, 90, 91]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.